Ann Curry by George Lange/NBC; Hoda Kotb courtesy NBC; Natalie Morales by Virginia Sherwood/Sci Fi Channel Ann Curry by George Lange/NBC; Hoda Kotb courtesy NBC; Natalie Morales by Virginia Sherwood/Sci Fi Channel

NBC is expected to announce on Tuesday that Ann Curry, Natalie Morales and Hoda Kotb will cohost the fourth hour of Today, sources tell the Hollywood Reporter. This added hour of the morning show, premiering Sept. 11, has been cleared in some 96 percent of the country and will air at 10 am/ET in most markets.

Today proper's Matt Lauer and Meredith Vieira will be MIA from the overextended portion, save for Lauer appearing briefly at the top of the hour to turn the show over to the new team.